Edvard Csanyi
1649 awesome technical articles
Electrical engineer, programmer and founder of EEP. Highly specialized for design of LV/MV switchgears and LV high power busbar trunking (<6300A) in power substations, commercial buildings and industry facilities. Professional in AutoCAD programming.
Transmission and Distribution
How Distribution Systems Control Customer Loads?
Distribution systems obviously exist to supply electricity to end users, so loads and their characteristics are important. Utilities supply a broad range of loads, from rural areas with load densities… Read more
Dec 10, 2012 | By Edvard Csanyi
High Voltage
Methods of Controlling Lightning Overvoltages in HV
For well shielded transmission lines, the backflashover condition, close to the substation, is of prime concern for determining the location and number of surge arresters required to achieve insulation coordination… Read more
Dec 08, 2012 | By Edvard Csanyi
Industrial Automation
Basic Mechanical Terms Used In Drives Applications
Terms below are the basic mechanical terms associated with the mechanics of DC drive operation. Many of these terms are familiar to us in some other context. Force Net Force… Read more
Dec 06, 2012 | By Edvard Csanyi
Transformers
How Power Transformer Produces Acoustical Noise?
This technical article explains the acoustic noise generating mechanism inside power transformers. Transformer noise has two sources: winding vibrations and core vibrations. The single most effective way to reduce windings noise… Read more
Dec 05, 2012 | By Edvard Csanyi
Electric Motor
Classes, Speed Control and Starting of DC motors
D.C. motors are divided into three classes, as follows: series-wound motor, shunt-wound motor and compound-wound motor. Let’s take a word about each of motor class. In this type (Figure 1)… Read more
Dec 04, 2012 | By Edvard Csanyi
Energy and Power
What Is The Basic Insulation Level (BIL)
Insulation levels are designed to withstand surge voltages, rather than only normal operating voltages. Since the insulation lines and equipment is protected by surge arresters draining the surges rapidly before… Read more
Dec 03, 2012 | By Edvard Csanyi
Energy and Power
Arrangements of LV Utility Distribution Networks (2)
Continued from the previous part: Arrangements of LV Utility Distribution Networks (1) In the past, an underground cable service or the wall-mounted insulated conductors from an overhead line service, invariably terminated… Read more
Dec 01, 2012 | By Edvard Csanyi
Energy and Power
Arrangements of LV Utility Distribution Networks
In European countries the standard 3-phase 4-wire distribution voltage level is 230/400 V. Many countries are currently converting their LV systems to the latest IEC standard of 230/400 V nominal… Read more
Nov 30, 2012 | By Edvard Csanyi
Protection
The Purpose Of Transformer Gas Relay
The transformer gas relay is a protective device installed on the top of oil-filled transformers. It performs two functions. It detects the slow accumulation of gases, providing an alarm after… Read more
Nov 29, 2012 | By Edvard Csanyi
Energy and Power
How to Predict Life Span of the Switchgear?
The life span of switchgear basically depends on the size of the load and the number of switching cycles. Instead of a time span, with electromechanical switchgear reference is usually… Read more
Nov 28, 2012 | By Edvard Csanyi
Cables
Inspection and Test Procedures for LV Cables
Visual and Mechanical Inspection Electrical Tests Test Values TABLE 100.12 – US Standard Fasteners – Bolt-Torque Values for Electrical Connections Compare cable data with drawings and specifications. Inspect exposed sections… Read more
Nov 27, 2012 | By Edvard Csanyi
Protection
Surge Protection for Frequency Converters
In principle a frequency converter consists of a rectifier, a d.c. link converter, an inverter and of the control electronics (Figure 1 above). At the input of the inverter the… Read more
Nov 26, 2012 | By Edvard Csanyi
Energy and Power
Purpose of Miniature Circuit Breakers (MCBs)
Miniature circuit breakers (MCB) are primarily designed to protect cables and lines against overload (thermal) and short-circuit (electromagnetic). They thus care for protecting this electrical equipment against excessive temperature rises and destruction… Read more
Nov 24, 2012 | By Edvard Csanyi
High Voltage
HV Instrument Current Transformers in T&D
Electrical measurements on a high-voltage transmission and distribution systems cannot be made practically or safely with direct contact to the power carrying conductors. Instead, the voltages and currents must be… Read more
Nov 23, 2012 | By Edvard Csanyi
Industrial Automation
Few Words About Frequency Converters
Since the late 1960’s, frequency converters have undergone extremely rapid changes, largely as a result of the development of microprocessor and semi-conductor technologies and their reduction in prices. However, the basic principles of… Read more
Nov 21, 2012 | By Edvard Csanyi
